When water causes you pain

What are swollen legs?

Swollen legs, also called leg oedema , occur due to fluid accumulation in the tissues. These deposits are mainly located in the connective tissue of the legs and can appear on one or both sides. Such swelling is especially common in the summer months or during pregnancy, as the body retains more fluid then. Affected areas such as calves, feet and ankles often feel heavy and tight.

Often the lymphatic system, which is responsible for removing excess body fluid, is unable to fully perform this function. Therefore the fluid remains in the connective tissue and leads to visible swelling. There are different forms of oedema: venous oedema occurs when fluid is not sufficiently drained because of increased leakage from the vessels. Lymphoedema develops due to a disturbance in the lymphatic system.

Despite their frequency, swollen legs can also indicate more serious conditions. In case of sudden or persistent swelling, it is therefore advisable to seek medical help to identify the exact cause.

What causes swollen legs?

Swollen legs can have various, sometimes harmless, causes. They are often the result of long periods of sitting or standing, which impair blood circulation and cause body fluid to collect in the connective tissue. This problem occurs particularly during long journeys or activities that require prolonged standing or sitting.

Hormonal fluctuations, such as those during menstruation, pregnancy or menopause, also promote water retention. Such changes in hormone balance can disturb the distribution of fluids in the body and lead to swelling.

Another factor is diet. Consuming too much salt, sugar or alcohol can promote water retention in the body, as these substances bind fluid and can exacerbate existing swelling. Also, a too low fluid intake, especially in hot summer months, can lead to inadequate elimination of water and thus to fluid retention.

Besides these everyday causes, there are also more serious diseases that can lead to swollen legs. The most common are venous insufficiency, where the veins can no longer return blood properly to the heart, and heart failure, where the heart does not pump blood efficiently, causing a backlog in the vessels and therefore swelling.

Nephrotic syndrome and certain liver diseases such as cirrhosis can also favor the formation of fluid retention. Overweight, which increases pressure on blood vessels, and hypothyroidism, which affects the body's fluid balance, can also lead to swollen legs. In addition, certain medications, such as hormonal agents, can cause leg swelling.

How exactly does water get into the legs?

Fluid accumulations in the legs arise through various mechanisms that disrupt the balance between fluid release and reabsorption in the connective tissue. An important factor is the increased pressure in the veins. In such cases, blood pools in the veins, especially where gravity acts – that is, in the legs. This increases pressure on the vein walls. The walls become porous and release fluid into the surrounding tissue, resulting in swelling.

Another factor is protein deficiency in the blood. Proteins, especially in blood plasma, bind water. If the protein concentration is too low, the fluid can no longer be sufficiently retained. As a result, it leaks from the veins into the tissue. This can be caused by conditions such as liver cirrhosis or kidney problems.

A specific mechanism concerns the lymphatic drainage. Lymphatic vessels are responsible for transporting body fluid away from the tissues. If this drainage is impaired, for example by a blockage of the lymphatic vessels, lymph accumulates in the tissue, which also leads to swelling. Such disorders can be caused by infections, tumours or congenital defects in the lymphatic vessels.

How can you tell there is water in the legs?

Fluid accumulations in the legs can present in various ways. First, a swelling is visible, usually at the ankles or calves. It is sometimes accompanied by an unpleasant feeling of pressure that can be painful. A simple clue is the so‑called pit test: if you press your finger into the swelling, a dent remains for a short time. This is a typical sign of fluid accumulation in the tissue.

The skin over the affected areas often feels tight and stretched. Some people report itching or tingling, while others experience numbness or calf cramps, especially at night. In some cases the skin may also become excessively warm, which could indicate inflammation. In addition, wearing clothes or shoes may become more uncomfortable because they suddenly feel tighter than usual.

With more pronounced swelling, the ankle in the affected feet may become less distinct. It is particularly important to watch for symptoms such as shortness of breath, as these may indicate a serious cause, such as heart disease. In such cases it is advisable to seek medical attention promptly.

How dangerous are swollen legs?

Swollen legs are in most cases harmless, provided they are caused by simple reasons such as prolonged sitting or standing and subside on their own after a short time. They become problematic, however, if the swelling persists, occurs on one side only or is accompanied by other symptoms such as pain or shortness of breath. In such situations a doctor should be consulted, as underlying conditions such as a venous thrombosis or renal insufficiency may be present.

Particularly dangerous are swellings that appear suddenly or persist for a long time. They can indicate serious health problems that, if left untreated, can lead to severe complications such as a pulmonary embolism or lasting venous damage.

What you can do about swollen legs: helpful tips

• Regularly use Kneipp treatments with alternating cold and warm foot baths. This method stimulates blood circulation and venous activity, which in turn improves fluid handling.
• Wrap a cloth in cold water and apply it to the affected areas. The cold draws excess body fluid out of the connective tissue, reducing swelling.
• Raise your legs regularly to reduce swelling. This supports venous return and relieves the vessels.
• Also have a lymphatic drainage performed. This specialized massage technique promotes the removal of body fluid and thus reduces swelling.
• Do simple exercises such as ankle pumps or calf raises to activate circulation and reduce fluid stasis.
• Also walk regularly or cycle. These activities stimulate the lymphatic and circulatory systems and help prevent swelling.
• Reduce the salt content in your diet. Too much salt can promote fluid retention in the tissues, while a low‑salt diet improves fluid balance.
• Wear loose clothing, especially around the legs. Tight garments can impede blood flow and lead to further swelling.
• Also avoid hot baths or saunas in the summer months. High temperatures can promote the formation of lymphatic fluid and thereby increase swelling.
• Eat foods with a high water content such as watermelon, cucumbers or strawberries. They support the elimination of excess fluid and toxins.
• Wear compression stockings to increase pressure on the veins and improve circulation. They support fluid circulation and relieve swelling.
• Eat a potassium‑rich diet. Potassium helps the body flush out excess water. Foods such as bananas, potatoes and spinach are particularly recommended.
• Drink herbal teas regularly, for example green tea, peppermint tea or birch leaf tea. These promote diuresis and help reduce swelling.
• Apple cider vinegar can be used both internally and externally. It helps remove excess fluid from the tissue and has an anti‑inflammatory effect.
• Boil coriander seeds in water and drink the infusion. Coriander promotes circulation and has a diuretic effect.
• In cases of venous weakness and venous diseases such as varicose veins or thrombosis, it is important to have the leg veins regularly examined. Support treatment with sufficient exercise and pay attention to healthy kidneys and venous valves to help prevent heart failure. Consult a doctor promptly for lower leg complaints or signs of blood clots, especially if venous or kidney diseases are already present.

Not every leg swelling is cause for concern, but it is always a signal from your body. If you know the cause, you can take targeted measures and improve your quality of life.